Introduction to the Siemens 6XV1871-5TH20 IE Connecting Cable
The Siemens 6XV1871-5TH20 is a flexible, pre-assembled Industrial Ethernet connecting cable designed for demanding factory automation environments. This cable meets the needs of applications where reliable data transmission and mechanical endurance are critical. With a 2.0 m length and both M12 D-coded and IE FC RJ45 145 connectors, it supports quick and secure connections for SIMATIC ET200pro, SCALANCE X208PRO, and SIMOTION stations.
Technical Specifications Breakdown
The Siemens 6XV1871-5TH20 delivers high performance across key parameters. Below are the essential specifications from the product data:
| Parameter |
Value |
| Cable designation |
2YY (ST) CY 2x2x0,75/1,5-100 LI GN |
| Wire length |
2 m |
| Number of electrical connections |
2 |
| Attenuation at 10 MHz (max) |
0.063 dB/m |
| Attenuation at 100 MHz (max) |
0.213 dB/m |
| Impedance (1 MHz–100 MHz) |
100 Ω |
| Operating voltage (RMS) |
80 V |
| Number of cores |
4 |
| Shield design |
Overlapped aluminum-clad foil + braided screen of tin-plated copper |
| Bending radius (single bend, min) |
32.5 mm |
| Bending cycles (drag chain) |
3,000,000 at 100 mm radius, 4 m/s, 4 m/s² |
| Temperature range (operation/storage/transport) |
-25 to +75 °C |
| Fire behavior |
UL 1685 (CSA FT 4) flame resistant |
| PoE/PoE+ capability |
Yes/Yes |
| Structured cabling standard |
Cat5e |
These values ensure minimal signal loss and robust performance in high-flex applications.
Compatibility & Integration
The Siemens 6XV1871-5TH20 is designed for Industrial Ethernet networks and is compatible with Siemens devices such as SIMATIC ET200pro, SCALANCE X208PRO, and SIMOTION. The dual M12 (D-coded) and RJ45 connectors allow direct connection to switches, controllers, and I/O stations. It supports PoE and PoE+ capabilities, enabling power delivery over the same cable for devices like IP cameras or wireless access points. Its Cat5e rating guarantees reliable 100 Mbps performance in noisy industrial environments.
Industry Applications
This cable excels in applications requiring frequent flexing and tight bends, such as in robotic arms, drag chains, and moving machine parts. For example, an automotive assembly line using the Siemens 6XV1871-5TH20 can maintain Ethernet connectivity to SIMOTION drives while withstanding over 3 million bending cycles. Similarly, a packaging facility deploying SCALANCE X208PRO switches benefits from the cable's robust shielding against electromagnetic interference and its UV-resistant jacket for outdoor sections.
Maintenance & Reliability
The Siemens 6XV1871-5TH20 requires minimal maintenance due to its rugged design. The PVC outer sheath resists oils and moisture, while the foil and braid shield protect against crosstalk. No special tools are needed for replacement, as connectors are factory-molded. Regularly inspect the cable for cuts or kinks, especially in high-flex zones. The drag-chain rating of 3 million cycles at 100 mm radius ensures long service life in continuous motion applications.
For purchasing advice or to verify compatibility with your existing system, consult PLC Source PRO (ubest101) for expert guidance.